3v4l.org

run code in 300+ PHP versions simultaneously
<?php $false = "a"; $v = true; echo isset(${!$v});

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0100.01018.43
8.3.50.0070.01022.88
8.3.40.0070.00718.71
8.3.30.0070.00718.43
8.3.20.0040.00420.33
8.3.10.0070.00021.81
8.3.00.0050.00319.72
8.2.180.0100.01016.63
8.2.170.0040.01122.96
8.2.160.0100.00721.06
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00422.30
8.2.120.0050.00226.35
8.2.110.0030.00620.99
8.2.100.0030.00718.09
8.2.90.0030.00519.08
8.2.80.0050.00317.97
8.2.70.0030.00517.63
8.2.60.0040.00418.04
8.2.50.0080.00018.10
8.2.40.0050.00320.47
8.2.30.0040.00419.24
8.2.20.0070.00017.55
8.2.10.0040.00417.92
8.2.00.0040.00418.18
8.1.280.0070.00725.92
8.1.270.0020.00524.04
8.1.260.0060.00328.09
8.1.250.0070.00028.09
8.1.240.0050.00521.30
8.1.230.0080.00419.48
8.1.220.0080.00017.74
8.1.210.0060.00318.77
8.1.200.0060.00317.23
8.1.190.0040.00417.22
8.1.180.0050.00318.10
8.1.170.0050.00318.53
8.1.160.0030.00322.13
8.1.150.0060.00320.67
8.1.140.0000.00819.47
8.1.130.0070.00017.65
8.1.120.0000.00717.45
8.1.110.0030.00517.46
8.1.100.0000.00717.43
8.1.90.0050.00517.43
8.1.80.0040.00417.45
8.1.70.0030.00617.32
8.1.60.0030.00617.52
8.1.50.0050.00317.50
8.1.40.0000.00917.43
8.1.30.0040.00417.59
8.1.20.0000.00817.55
8.1.10.0000.00817.52
8.1.00.0050.00217.27
8.0.300.0070.00018.77
8.0.290.0040.00416.63
8.0.280.0000.00718.42
8.0.270.0050.00217.26
8.0.260.0030.00317.24
8.0.250.0030.00616.84
8.0.240.0070.00016.98
8.0.230.0030.00316.94
8.0.220.0040.00416.80
8.0.210.0070.00016.92
8.0.200.0030.00316.87
8.0.190.0030.00516.96
8.0.180.0080.00016.86
8.0.170.0040.00416.95
8.0.160.0000.00816.92
8.0.150.0030.00616.70
8.0.140.0030.00316.85
8.0.130.0060.00013.30
8.0.120.0030.00516.83
8.0.110.0030.00516.77
8.0.100.0060.00316.89
8.0.90.0040.00416.92
8.0.80.0090.00616.88
8.0.70.0000.00716.81
8.0.60.0000.00716.83
8.0.50.0070.00316.82
8.0.30.0110.00817.06
8.0.20.0080.01117.40
8.0.10.0070.00017.07
8.0.00.0100.01016.86
7.4.330.0050.00015.08
7.4.320.0000.00616.48
7.4.300.0030.00316.59
7.4.290.0070.00016.57
7.4.280.0050.00516.38
7.4.270.0030.00316.57
7.4.260.0000.00716.44
7.4.250.0000.00716.52
7.4.240.0040.00416.51
7.4.230.0070.00016.48
7.4.220.0130.00716.61
7.4.210.0130.00616.68
7.4.200.0050.00316.63
7.4.160.0100.00616.46
7.4.150.0090.00917.40
7.4.140.0130.01317.86
7.4.130.0060.01116.48
7.4.120.0080.00916.48
7.4.110.0150.00616.34
7.4.100.0060.00916.29
7.4.90.0130.00416.45
7.4.80.0030.01319.39
7.4.70.0100.00616.50
7.4.60.0090.00616.73
7.4.50.0080.00816.54
7.4.40.0160.00316.44
7.4.30.0080.00816.20
7.4.00.0030.01314.82
7.3.330.0000.00613.00
7.3.320.0030.00313.11
7.3.310.0000.00716.18
7.3.300.0030.00316.14
7.3.290.0080.00916.15
7.3.280.0070.01216.16
7.3.270.0060.01017.40
7.3.260.0120.00516.20
7.3.250.0100.00916.37
7.3.240.0060.01216.47
7.3.230.0070.01016.39
7.3.210.0090.00916.27
7.3.200.0090.01216.52
7.3.190.0120.00916.50
7.3.180.0100.01016.20
7.3.170.0080.00816.43
7.3.160.0100.01216.27
7.2.330.0160.00316.68
7.2.320.0090.00916.46
7.2.310.0060.01016.57
7.2.300.0110.00616.43
7.2.290.0110.00516.60
7.2.00.0080.00619.14
7.1.70.0030.00716.90
7.1.60.0030.01016.87
7.1.00.0100.08722.36
7.0.200.0040.01216.40
7.0.90.1430.06719.90
7.0.80.1800.06719.93
7.0.70.0170.06019.96
7.0.60.0230.06719.93
7.0.50.1800.06320.31
7.0.40.3370.07020.38
7.0.30.2670.08720.30
7.0.20.2330.05720.30
7.0.10.2270.04720.30
7.0.00.4100.05720.41
5.6.230.0130.06020.61
5.6.220.0170.05320.61
5.6.210.0230.05020.66
5.6.200.0100.07320.99
5.6.190.0230.06721.11
5.6.180.0170.07321.01
5.6.170.0230.07021.09
5.6.160.0200.05721.14
5.6.150.0200.05721.14
5.6.140.0200.05721.08
5.6.130.0130.06021.16
5.6.120.0170.07321.11
5.6.110.0200.05321.18
5.6.100.0130.06021.00
5.6.90.0270.07321.05
5.6.80.0230.07020.51
5.6.70.0200.06720.48
5.6.60.0130.06020.46
5.6.50.0070.06720.39
5.6.40.0170.08320.41
5.6.30.0100.08320.48
5.6.20.0130.08320.44
5.6.10.0200.08020.46
5.6.00.0130.08320.40

preferences:
57.98 ms | 401 KiB | 5 Q